Patent GB-190818729-A (GB)
Title: Improvements in and relating to the Manufacture and Production of Dyestuffs of the Azine Series.
Inventor: NEWTON PHILIP ARTHUR
Filed: 1908-09-07
Granted: 1909-07-15
Abstract: 18,729. Newton, P. A., [Farbenfabriken vorm. F. Bayer & Co.]. Sept. 7. Samples furnished under Section 2 of Patents &c. Act, 1907. Dyes, artificial.-Azine dyes are obtained by oxidizing, in presence of ammoniacal cupric oxide by means of air or oxygen, p-diamines (containing at least one free amino group) or their sulphonic or carboxylic acids, and arylated 1 : 3-naphthylenediamines or their sulphonic acids ; the products are sulphonated, if necessary, to convert them into more readily soluble dyes. Suitable p-diamines are p-phenylenediamine and its sulphonic or carboxylic acids, 1 :4-naphthylenediamine and its sulphonic acids,p-aminomonoalkyl-, -aryl-, or-aralkyl-anilines, p-aminodiphenylamine,p-p<1>-diaminodiphenylamine, p-amino-dialkyl-, -diaryl-, or diaralkyl-anilines, paminodimethylaniline sulphonic acid, p-aminodiphenylamine sulphonic acid, monoacetyl-p-p<1>- diaminodiphenylamine sulphonic acid, p-methoxyp<1>-aminodiphenylamine sulphonic acid, o-methoxyp<1>-aminodiphenylamine sulphonic acid, 1-phenylamino-4-naphthylamine or its 8-sulphonic acid, benzidine, &c. The following pairs of parent materials are specified :-diphenyl-1 : 3-naphthylenediamine-8-sulphonic acid and p-amino-o<1>- methoxydiphenylamine sulphonic acid ; diphenyl- 1 : 3-naphthylenediamine-6 : 8-disulphonic acid and p-phenylenediamine; di-p-tolyl-1 : 3-naphthylenediamine-8-sulphonic acid and phenyl-1 : 4-naphthylenediamine - 8 - sulphonic acid ; diphenyl-1 : 3 naphthylenediamine-8-sulphonic acid and p-amino. diethylaniline-m-sulphonic acid ; diphenyl-1 : 3- naphthylenediamine-8-sulphonic acid and p aminodiethylaniline-m-sulphonic acid ; diphenyl-1 : 3- naphthylenediamine-8-sulphonic acid and p-aminodiphenylamine - o - - sulphonic acid ; diphenyl-1 : 3- naphthylenediamine-8 sulphonic acid and p-aminodimethylaniline-m-sulphonic acid ; diphenyl-1 : 3- naphthylenediamine-6 : 8-disulphonic acid and paminophenyl - a - naphthylamine-8-sulphonic acid ; diphenyl-1 : 3-naphthylenediamine-6 : 8 disulphonic acid and p-aminomethylbenzylaniline sulphonic acid ; diphenyl-1 3-naphthylenediamine - 5 - sulphonic acid and p-aminophenyl-a-naphthylamine- 5-sulphonic acid ; diphenyl-1 : 3-naphthylenediamine-8-salphonic acid and p-aminophenyl-a-naphthylamine-8-sulphonic acid ; diphenyl-1 : 3-naphthylenediamine-6 : 8-disulphonic acid and p-aminophenyl-a-naphthylamine-5-sulphonic acid; diphenyl- 1 : 3-naphthylenediamine-8-sulphonic acid and paminophenyl-o<1>-tolylamine sulphonic acid ; diphenyl-1 : 3-naphthylenediamine - 8 - sulphonic acid and p - aminophenyl-a-naphthylamine-5-sulphonic acid ; diphenyl-1 : 3-naphthylenediamine-5- sulphonic acid and p-aminodiphenylamine-o-sulphonic acid ; diphenyl-1 : 3-naphthylenediamine- 6 : :8-disulphonic acid and monoacetyl-p-p<1>-diaminodiphenylamine-o-sulphonic acid. These products dye wool blue to violet shades. The product obtained from diphenyl-1 ; 3-naphthylenediamine and p-phenylenediamine dyes tannin-mordanted cotton violet shades ; sulphonation of this dye gives a product dyeing wool violet shades. Specifications Nos. 8898, 11,892, and 16,780, A.D. 1893, are referred to.